The Somta Extra Long Series Drill - HSS-E Parabolic Flute - 12mm x 295mm is purpose-built for deep-hole work where reach, rigidity, and precision matter. This high-performance drill bit combines a long, balanced design with advanced metallurgy to tackle extended drilling tasks in demanding metalworking environments. Whether you’re piercing through thick steel plates or threading into hard alloys, this bit delivers consistent holes with minimal wander and clean edge quality.

Why this drill stands out

• Extra-long reach for deep holes: At 295mm overall length, this drill bit penetrates deeper into workpieces without repositioning, reducing setup time and increasing productivity on every job.
• HSS-E construction: The enhanced high-speed steel formulation delivers superior heat resistance and wear tolerance, extending tool life when drilling through tough metals and high-strength alloys.
• Parabolic flute geometry: The parabolic flute design optimizes chip evacuation, preventing chip clogging and minimizing heat buildup. The result is steadier cutting action, smoother feeds, and more consistent hole diameters.
• Sharp, durable cutting edges: Precisely ground cutting edges bite cleanly into metal, producing true holes with reduced radial drift and improved hole quality—even in challenging materials.
• Stable, long-flute performance: The flute length and spacing are engineered to minimize friction and vibration, helping you maintain control at deeper depths and higher feed rates.

Ideal use scenarios

Built for deep-hole drilling across a range of metals, this 12mm diameter drill is well-suited for:

• Automotive and industrial fabrication where holes must pass through thick components or contain fasteners at depth
• Machining of engine blocks, housings, and structural steel where precision deep drilling is essential
• Maintenance and repair work involving heavy gauge metals that demand reliable long-reach performance

How it improves your workflow

• Reduces setup time by eliminating frequent workpiece repositioning for deep holes
• Delivers cleaner hole edges with less need for secondary deburring
• Minimizes thermal stress on the tool and workpiece thanks to efficient chip clearance
• Maintains hole concentricity and diameter accuracy through robust flute geometry

To get the most from the Somta Extra Long Series Drill, pair it with suitable cutting fluids and a stable holding setup. Start with a conservative feed rate and gradually increase as the drill enters deeper material to maintain control and prevent deflection. For best results, ensure your drilling equipment is well-aligned and that the drill is clamped securely to avoid any runout that could compromise hole quality.

What you gain with this specific drill

With the 12mm diameter and 295mm length, you’re equipped to tackle deep-hole challenges without compromising precision. The combination of HSS-E material and parabolic flute geometry translates to longer tool life, reliable chip management, and consistently true holes—crucial outcomes for any project where deep access matters as much as accuracy.

Designed for professionals who value efficiency, reliability, and high-quality outcomes, this Somta drill is a dependable choice for metalworking shops, job shops, and in-house manufacturing teams looking to expand their deep-hole capabilities without carrying multiple tool variants.